C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/217
C22B 60/02 (2006.01)
Patent
CA 1152753
Abstract of the disclosure The invention concerns a method for the liquid/liquid extraction of uranium from phosphoric acid with the aid of alkylamine polyphosphate and/or alkylamine metaphosphate compounds, dissolved in organic solvents insoluble in water, in the presence of FeII ions. The uraniferous phosphoric acid is braught into contact with an organic phase. The organic phase is composed of a long-chain alkylamine polyphosphate and/or alkylamine metaphosphate compound and an organic solvent, the alkylamine in the alkyl residue containing 8 to 30, preferably 8 to 18 C-atoms corresponding to the formula Image R1 and R2 denoting hydrogen or alkyl radicals and R3 alkyl radicals, the polyphosphate an/or metaphosphate residue having 2 to 10 000 P-Atoms per molecule and being of the straight-chain and/or link-chain or cyclic type. The uranium is transferred from the aqueous into the organic phase from which the uranium is reextracted in the know way.
365899
Beltz Klaus
Frankenfeld Klaus
Lehmann Rainer H.
Zintl Inge
Chemische Fabrik Budenheim Rudolf A. Oetker
Fetherstonhaugh & Co.
Urangesellschaft Mbh
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